4.0 out of 5 (2 experiences)
Also known as
Chocolate Cosmos, Chocolate Cosmos and Black Dahlia
How to care for Black Cosmos
Black Cosmos needs 0.5 cups of water every 9 when it doesn’t get direct sunlight and is potted in a 5" pot located in Madison, Wisconsin.
Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.
January 25th, 2023
Madison is trending towards greater sunlight intensity!
The amount of sunlight in Madison is expected to increase by 37.7% over the next 2 weeks to an average of 7.5 megajoules of energy per m2 pe…
January 27th, 2023
This month, Madison is getting an average of 5.7 hours of clear sky sunlight per day.
Hours of daylight will increase by 12% over the next two weeks. Your plants will get 10.1 total hours of dayli…
Black Cosmos love being close to bright, sunny windows 😎.
Place it less than 1ft from a south-facing window to ensure it receives enough light to survive during this time of reduced sunlight intensity in Madison, Wisconsin ⛅.
Black Cosmos does not tolerate low-light 🚫.
Most potting soils come with ample nutrients which plants use to produce new growth.
By the time your plant has depleted the nutrients in its soil it’s likely grown enough to need a larger pot anyway.
To replenish this plant's nutrients, repot your Black Cosmos after it doubles in size or once a year—whichever comes first.